32210-SKF bearing: complete specifications & equivalents
The 32210-SKF is a ISO 355 radial bearing sized 50 x 90 x 24.75 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 50 mm |
| Outer diameter D | 90 mm |
| Width B | 24.75 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 101 kN |
| Basic static load rating C0 | 100 kN |
| Fatigue load limit Pu | 11.4 kN |
| Reference speed (thermal) | 6000 rpm |
| Limiting speed (mechanical) | 7500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 620 g |
| Manufacturer designation | SKF 32210 |
| Standard | ISO 355 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB |
| Last verified | 2026-09-28 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB) · extracted 2026-09-28
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 32200-series range
| Bore d | 1.969 in |
|---|---|
| Outer diameter D | 3.543 in |
| Width B | 0.974 in |
| ISO bore code | 10 |
| Radial section height (D−d)/2 | 20 mm |
| Smallest bore in 32200-series | 17 mm |
| Largest outer diameter in 32200-series | 580 mm |
| Width range across 32200-series | 17.25–159 mm |
| Bore position in 32200-series (smallest first) | 9 of 36 |
| Bore above smallest 32200-series size | 33 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32210 | FAG | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 32210 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 355 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
| 32210-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 32210-SKF model number is decoded
Ordering number SKF 32210 in SKF catalogue PUB BU/P1 17000 denotes a single-row tapered roller bearing for a 50 mm shaft, heavy section, with an open pressed-steel-cage execution and one-direction axial capacity.The code breaks down as type prefix 3 (tapered roller), series 22 (the heavy section), and bore code 10 = 50 mm; dimensions 50×90×24.75 mm therefore match the ISO 355 envelope. In SKF suffix language a bare 32210 is the standard execution; B marks a larger contact angle and Q or J2 mark clearance/cage variants, all quoted separately. At 6,000 r/min reference speed the 20.0 mm-section 32210 is governed thermally by preload and lubricant flow; grease or oil selection should be made against that value, with 7,500 r/min as the mechanical ceiling. For a 50 mm shaft the usual cone seat is k5 with an H7 housing when the inner ring rotates; arrange two 32210 bearings as a set for two-direction location and set clearance from the load diagram, never from assembly feel. Operating context for the 50 mm bore: a shaft of this diameter in the medium-bore band typically runs between 40000 and 60000 r/min in real machinery, and the 90 mm outside diameter places the housing shoulder at 98 mm outer abutment; the 24.75 mm width and 620 g mass together set the shaft critical speed and the housing resonance check for this 32200-series envelope.
Typical equipment & failure modes
Common applications
- axle-boxes in material-handling equipment
- automotive and light-truck wheel hubs
- industrial gearbox shafts and reducers
- differential and pinion drives
Known failure patterns
- cup or cone misalignment when the separable rings are not seated square during mounting
- loose cup rotation in the housing when the specified press fit is not achieved
- uneven load sharing in a pair when spacer faces are not parallel to the bore
- thermal preload runaway in an O-arrangement pair when inner-ring heat expands the setting
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- On this 50 mm bore, interference and temperature rise consume clearance inside a preloaded pair; calculate the residual clearance after mounting and at operating temperature — an over-tight 32210 pair heats, loses setting control and smears the roller-rib contact.
- The 322 series at 50 mm bore (90×24.75 mm) is a wider, higher-capacity section than 30210; do not substitute without re-checking shaft shoulder diameters and pair setting.
- When the outer ring rotates, reverse the fit logic and provide cup location; the tapered contact of 32210 pushes the rings apart under load, so a non-located cup walks its seat even when the shaft is fixed.
- O (back-to-back) pairs are stiffer against moments, X (face-to-face) pairs tolerate misalignment and thermal growth better; choosing the arrangement from the 2D drawing rather than the actual shaft thermal expansion is a common 32210 mounting error.
- Shaft and housing fillets must clear the bearing chamfer so the 24.75 mm-wide cup seats square; use an undercut or withdrawal groove rather than an oversized radius that locks on the ring face.
- The 101/100 kN ratings are SKF catalogue 17000 values for the basic execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification and re-verify for critical drives.
- SKF lists several executions of 32210 (basic, B steeper angle, Q/J2 clearance variants); they are not interchangeable order numbers — quote the full SKF 32210 designation when purchasing and match the execution to the mounting arrangement.
Frequently asked questions
What are the dimensions and catalogue data of 32210?
The SKF 32210 is a single-row tapered roller bearing with 50 mm bore, 90 mm outer diameter and 24.75 mm width (1.969 × 3.543 × 0.974 in) per ISO 355. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 101 kN, C0 100 kN, fatigue load limit Pu 11.4 kN, reference speed 6,000 r/min, limiting speed 7,500 r/min, mass about 620 g. It is an open, separable bearing with a pressed-steel cage.
How does the 32210 bore code work?
The last two digits of 32210 are bore code 10, so 10 × 5 = 50 mm bore. The 90 mm OD and 24.75 mm width come from the ISO 355 dimension-series plan, shared with other tapered bearings of the same code.
What do the 32210 series and basic execution designations mean?
The leading 3 marks a single-row tapered roller bearing; the second digit 22 is the ISO 355 series (heavy section). The SKF catalogue lists the ISO 355 dimension-series code after the bare number. A steeper-contact-angle variant (B suffix) is a different order number and is not interchangeable with the basic execution.
Can a single 32210 take axial load in both directions?
No — one single-row tapered roller bearing reacts thrust in one direction only, and under radial load its contact angle induces an axial force. Use two bearings as a matched pair: O (back-to-back) for a rigid, moment-resisting arrangement, X (face-to-face) where thermal expansion must be tolerated, or tandem where one-direction thrust is shared.
How does 32210 compare with a ball bearing of the same bore?
A tapered roller bearing has line contact and a steep contact angle: much higher combined axial-plus-radial capacity and shock resistance than a ball bearing of the same bore, at the cost of speed, one-direction thrust, mandatory pairing for reversing loads and a minimum axial load requirement. A ball bearing cannot be dropped into a combined-load 32210 position and vice versa — verify load direction, Fa/Fr ratio and speed before substituting.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.1 metric single-row TRB on 2026-09-28. Read our editorial & correction policy.